What thread size does the Kleenbore MOP40 use, and will it fit my existing Australian cleaning rod?

The Kleenbore MOP40 features a standard American #8-32 male thread designed to connect directly to commercial cleaning rods commonly used by the Australian shooting community, such as Kleenbore, Pro-Shot, and Hoppe's. If your cleaning rod uses a female 5/16-27 shotgun thread or a European metric fitting, you will simply need an inexpensive thread adapter to get started.

Can I use the Kleenbore MOP40 for scrubbing heavy carbon or lead fouling out of my 10mm Auto barrel?

No, this mop is strictly designed for applying cleaning solvents, bore foams, and protectants or for final oil swabbing, rather than heavy mechanical scrubbing. For removing baked-on carbon, copper, or lead deposits in .40 or 10mm calibres, you should instead use a dedicated phosphor bronze bore brush.

What specific calibres are compatible with the Kleenbore MOP40, and can I use it in a 9mm pistol?

The MOP40 is specifically engineered for .40 S&W, 10mm Auto, and .410 bore barrels, measuring approximately 7.6 cm in length and 1.3 cm in diameter. It is completely unsuitable for smaller calibres like .38/9mm because the cotton fibres will bind and fail to enter the bore, requiring a smaller calibre-specific mop instead.

Does the Kleenbore MOP40 require any electrical safety certifications for use in Australia?

As the Kleenbore MOP40 is a fully passive, unpowered mechanical cleaning tool constructed from 100% natural cotton fibres and a twisted steel core, 240V mains compatibility, Australian wall plugs, and SAA/RCM electrical safety certifications are not applicable.

40 Cal Bore Mop - KleenBore MOP40

The KleenBore .40/10mm Cotton Bore Mop is a dedicated barrel-maintenance attachment designed to apply cleaning solvents, bore foams, and rust-inhibiting protectants across the rifling grooves of fouled barrels. Made in the USA from 100% natural, absorbent cotton fibres wound around a twisted steel core, it holds liquids without dripping and allows for non-abrasive bore drying and lubrication prior to firearm storage.

Key Features

Chemical and Solvent Application: Evenly spreads gun-cleaning solvents, CLPs, and chemical bore foams across internal rifling surfaces.
High Fluid Retention: Built with 100% natural cotton fibres to provide greater absorbency and liquid retention than synthetic alternatives.
Twisted Steel Core: Secures the cotton fibers for repeated swabbing and drying passes without scratching the bore or muzzle crown.
Standard Rod Integration: Fitted with an industry-standard #8-32 male thread for direct attachment to standard commercial cleaning rods.

Specifications

Calibre Compatibility: .40 S&W, 10mm Auto, and .410 bore
Thread Size: Standard American #8-32 male thread
Material: 100% natural cotton with a twisted steel wire core
Length: 7.6 cm (3.0 in)
Diameter: 1.3 cm (0.5 in)
Weight: 14 g (0.5 oz)
Country of Manufacture: USA

Who is the Kleenbore .40/10mm Cotton Bore Mop for?

Shooters maintaining .40 S&W pistols — requires a cotton bore cleaning mop with a 1.3 cm diameter to ensure full 360-degree circumferential contact for applying lubricants and solvents across .40 S&W barrel lands and grooves.
Handgun enthusiasts maintaining 10mm Auto firearms — utilises a standard #8-32 male thread and 7.6 cm overall length to connect directly to standard pistol rods for swabbing out and drying 10mm Auto chambers and bores.

Less suitable for: Firearm bores smaller than .40 calibre (such as .22, .30/7.62mm, or 9mm) where the 1.3 cm diameter will bind in the barrel, requiring smaller calibre-specific mops; calibres larger than 10mm (such as .44/.45 cal or standard shotguns) where it will fail to maintain surface contact; and bores with baked-on carbon, lead, or copper fouling, which require mechanical scrubbing with a dedicated phosphor bronze or stiff nylon bore brush.

SKU	KLB41038LP
Model #	MOP40
Brand	Kleenbore
Shipping Weight	1.0000kg

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Kleenbore Mop40 Cotton Bore Mop 40 10mm 8-32 Thread

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